Yes, as maurice93 said, this is a standard process and applies to most SPAs out there.
However, next time when you go to Platinum, pay for the room to that cute lady at front desk, go to your room, take a shower, relax and wait.
Once your lady arrives, ask her the rate. If you don't like it, leave and you will get your money back.
There is one little problem though .... Are you strong enough to leave the room no matter how much she asks for?!!!!!!